classes/lib: Complete transition to python3

This patch contains all the other misc pieces of the transition to
python3 which didn't make sense to be broken into individual patches.

(From OE-Core rev: fcd6b38bab8517d83e1ed48eef1bca9a9a190f57)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/meta/lib/oe/manifest.py b/meta/lib/oe/manifest.py
index ec2ef500b2..95f8eb2df3 100644
--- a/meta/lib/oe/manifest.py
+++ b/meta/lib/oe/manifest.py
@@ -4,11 +4,10 @@ import re
 import bb
 
 
-class Manifest(object):
+class Manifest(object, metaclass=ABCMeta):
     """
     This is an abstract class. Do not instantiate this directly.
     """
-    __metaclass__ = ABCMeta
 
     PKG_TYPE_MUST_INSTALL = "mip"
     PKG_TYPE_MULTILIB = "mlp"